Investment Securities - Held-to-Maturity and Available-for-Sale, Scheduled Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Held-to-maturity Securities [Abstract]
Securities Held-to-Maturity, Amortized Cost	$ 40,990	$ 54,347
Securities Held-to-Maturity, Gross Unrealized Gains	135	470
Securities Held-to-Maturity, Gross Unrealized Losses	(64)	(52)
Securities Held-to-Maturity, Fair Value	41,061	54,765
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost	330,681	311,651
Securities Available-for-Sale, Gross Unrealized Gains	2,937	4,160
Securities Available-for-Sale, Gross Unrealized Losses	(3,848)	(1,528)
Securities Available-for-Sale, Fair Value	329,770	314,283
U.S. Treasuries [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost, After 1 year to 5 years	4,978	4,972
Securities Available-for-Sale, Gross Unrealized Gains, After 1 year to 5 years	0	0
Securities Available-for-Sale, Gross Unrealized Losses, After 1 year to 5 years	(91)	(127)
Securities Available-for-Sale, Fair Value, After 1 year to 5 years	4,887	4,845
Securities Available-for-Sale, Amortized Cost	4,978	4,972
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Securities Available-for-Sale, Gross Unrealized Losses	(91)	(127)
Securities Available-for-Sale, Fair Value	4,887	4,845
U.S. Government Corporations and Agencies [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost, Within 1 year	10,389	0
Securities Available-for-Sale, Gross Unrealized Gains, Within 1 year	0	0
Securities Available-for-Sale, Gross Unrealized Losses, Within 1 year	(29)	0
Securities Available-for-Sale, Fair Value, Within 1 year	10,360	0
Securities Available-for-Sale, Amortized Cost, After 1 year to 5 years	92,148	122,328
Securities Available-for-Sale, Gross Unrealized Gains, After 1 year to 5 years	26	48
Securities Available-for-Sale, Gross Unrealized Losses, After 1 year to 5 years	(378)	(532)
Securities Available-for-Sale, Fair Value, After 1 year to 5 years	91,796	121,844
Securities Available-for-Sale, Amortized Cost	102,537	122,328
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	26	48
Securities Available-for-Sale, Gross Unrealized Losses	(407)	(532)
Securities Available-for-Sale, Fair Value	102,156	121,844
State and Political Subdivisions [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost, Within 1 year	0	600
Securities Available-for-Sale, Gross Unrealized Gains, Within 1 year	0	2
Securities Available-for-Sale, Gross Unrealized Losses, Within 1 year	0	0
Securities Available-for-Sale, Fair Value, Within 1 year	0	602
Securities Available-for-Sale, Amortized Cost, After 1 year to 5 years	17,362	12,326
Securities Available-for-Sale, Gross Unrealized Gains, After 1 year to 5 years	80	17
Securities Available-for-Sale, Gross Unrealized Losses, After 1 year to 5 years	(29)	(59)
Securities Available-for-Sale, Fair Value, After 1 year to 5 years	17,413	12,284
Securities Available-for-Sale, Amortized Cost, After 5 years to 10 years	47,969	49,554
Securities Available-for-Sale, Gross Unrealized Gains, After 5 years to 10 years	1,188	1,616
Securities Available-for-Sale, Gross Unrealized Losses, After 5 years to 10 years	(32)	(77)
Securities Available-for-Sale, Fair Value, After 5 years to 10 years	49,125	51,093
Securities Available-for-Sale, Amortized Cost, Over 10 years	34,334	37,004
Securities Available-for-Sale, Gross Unrealized Gains, Over 10 years	1,160	1,792
Securities Available-for-Sale, Gross Unrealized Losses, Over 10 years	0	(1)
Securities Available-for-Sale, Fair Value, Over 10 years	35,494	38,795
Securities Available-for-Sale, Amortized Cost	99,665	99,484
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	2,428	3,427
Securities Available-for-Sale, Gross Unrealized Losses	(61)	(137)
Securities Available-for-Sale, Fair Value	102,032	102,774
Residential Mortgage Backed Securities [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost, After 1 year to 5 years	9,713	5,066
Securities Available-for-Sale, Gross Unrealized Gains, After 1 year to 5 years	12	17
Securities Available-for-Sale, Gross Unrealized Losses, After 1 year to 5 years	(13)	0
Securities Available-for-Sale, Fair Value, After 1 year to 5 years	9,712	5,083
Securities Available-for-Sale, Amortized Cost, After 5 years to 10 years	60	4,856
Securities Available-for-Sale, Gross Unrealized Gains, After 5 years to 10 years	0	0
Securities Available-for-Sale, Gross Unrealized Losses, After 5 years to 10 years	0	(32)
Securities Available-for-Sale, Fair Value, After 5 years to 10 years	60	4,824
Securities Available-for-Sale, Amortized Cost, Over 10 years	3,517	3,661
Securities Available-for-Sale, Gross Unrealized Gains, Over 10 years	65	75
Securities Available-for-Sale, Gross Unrealized Losses, Over 10 years	0	0
Securities Available-for-Sale, Fair Value, Over 10 years	3,582	3,736
Securities Available-for-Sale, Amortized Cost	13,290	13,583
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	77	92
Securities Available-for-Sale, Gross Unrealized Losses	(13)	(32)
Securities Available-for-Sale, Fair Value	13,354	13,643
Collateralized Mortgage Obligations [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost, Over 10 years	3,215	3,810
Securities Available-for-Sale, Gross Unrealized Gains, Over 10 years	0	0
Securities Available-for-Sale, Gross Unrealized Losses, Over 10 years	(82)	(85)
Securities Available-for-Sale, Fair Value, Over 10 years	3,133	3,725
Securities Available-for-Sale, Amortized Cost	3,215	3,810
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Securities Available-for-Sale, Gross Unrealized Losses	(82)	(85)
Securities Available-for-Sale, Fair Value	3,133	3,725
Corporate Bonds [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost, Within 1 year	250	4,998
Securities Available-for-Sale, Gross Unrealized Gains, Within 1 year	0	22
Securities Available-for-Sale, Gross Unrealized Losses, Within 1 year	0	0
Securities Available-for-Sale, Fair Value, Within 1 year	250	5,020
Securities Available-for-Sale, Amortized Cost, After 1 year to 5 years	19,446	29,505
Securities Available-for-Sale, Gross Unrealized Gains, After 1 year to 5 years	25	88
Securities Available-for-Sale, Gross Unrealized Losses, After 1 year to 5 years	(158)	(244)
Securities Available-for-Sale, Fair Value, After 1 year to 5 years	19,313	29,349
Securities Available-for-Sale, Amortized Cost, After 5 years to 10 years	10,148	20,442
Securities Available-for-Sale, Gross Unrealized Gains, After 5 years to 10 years	0	0
Securities Available-for-Sale, Gross Unrealized Losses, After 5 years to 10 years	(266)	(371)
Securities Available-for-Sale, Fair Value, After 5 years to 10 years	9,882	20,071
Securities Available-for-Sale, Amortized Cost, Over 10 years	60,000	0
Securities Available-for-Sale, Gross Unrealized Gains, Over 10 years	0	0
Securities Available-for-Sale, Gross Unrealized Losses, Over 10 years	(2,770)	0
Securities Available-for-Sale, Fair Value, Over 10 years	57,230	0
Securities Available-for-Sale, Amortized Cost	89,844	54,945
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	25	110
Securities Available-for-Sale, Gross Unrealized Losses	(3,194)	(615)
Securities Available-for-Sale, Fair Value	86,675	54,440
Money Market Mutual Funds [Member]
Available-for-sale Securities [Abstract]
Securities Available-for-Sale, Amortized Cost	16,726	11,675
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Securities Available-for-Sale, Gross Unrealized Losses	0	0
Securities Available-for-Sale, Fair Value	16,726	11,675
Equity Securities [Member]
Available-for-sale Securities [Abstract]
Equity Securities Available-for-Sale, Amortized Cost	426	854
Equity Securities Available-for-Sale, Gross Unrealized Gains	381	483
Equity Securities Available-for-Sale, Gross Unrealized Loss	0	0
Equity Securities Available-for-Sale, Fair Value	807	1,337
Corporate Bonds [Member]
Held-to-maturity Securities [Abstract]
Securities Held-to-Maturity, Amortized Cost, Within 1 year	21,047	13,088
Securities Held-to-Maturity, Gross Unrealized Gains, Within 1 year	134	82
Securities Held-to-Maturity, Gross Unrealized Losses, Within 1 year	0	0
Securities Held-to-Maturity, Fair Value, Within 1 year	21,181	13,170
Securities Held-to-Maturity, Amortized Cost, After 1 year to 5 years	19,943	41,259
Securities Held-to-Maturity, Gross Unrealized Gains, After 1 year to 5 years	1	388
Securities Held-to-Maturity, Gross Unrealized Losses, After 1 year to 5 years	(64)	(52)
Securities Held-to-Maturity, Fair Value, After 1 year to 5 years	19,880	41,595
Securities Held-to-Maturity, Amortized Cost	40,990	54,347
Securities Held-to-Maturity, Gross Unrealized Gains	135	470
Securities Held-to-Maturity, Gross Unrealized Losses	(64)	(52)
Securities Held-to-Maturity, Fair Value	$ 41,061	$ 54,765